title: A widespread outbreak of Yersinia pseudotuberculosis O:3 infection from iceberg lettuce.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D005260:Female; D005387:Finland / Q000453:epidemiology; D005516:Food Microbiology; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D018545:Lactuca / Q000382:microbiology*; D008297:Male; D008875:Middle Aged; D015012:Yersinia pseudotuberculosis Infections / Q000453:epidemiology* / Q000635:transmission